When drought conditions put stress on trees, they’re more vulnerable to viruses and pests. “So one of those would be two lined chestnut borer,” said Spartz. “It’s an insect. It looks ...

A Pennsylvania state forestry expert says native pests are causing troublesome impacts to several valuable tree species.

Texans can help prevent the spread of oak wilt — one of the deadliest tree diseases in the U.S., responsible for killing ...